Optimize handlers for large datasets

**Feature request**
It would be great to have notifications for utils.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_notifications` with default `false`.

Start by locating the utils notification handling and the configuration entry points in this Shell project. Trace how existing options are defined and consumed, then determine the expected notification behavior for production deployments. Done means an `enable_notifications` option exists with a default of `false` and the relevant behavior is covered by the project's tests.

Written by the indexing model from the issue text.